Keep your devices powered with the all-new Xiaomi Rainbow 7 Battery Pack. This convenient battery pack consists of 10 AAA-sized batteries ideal for keeping a wide range of devices powered such as wall clocks, TV remotes, wireless keyboards and mice or wireless video game controllers. Made of high-quality Alkaline Zinc-manganese Dioxide Cells, these batteries offer you reliable and stable performance. For protection, it features four-fold leak-proof technology, using various materials including an alloy-coated steel shell with a reasonable positive and negative electrode formula to ensure your batteries don’t leak over time. The Rainbow 7 batteries are also environmentally friendly, with no mercury or cadmium, as well as being safe and non-toxic, allowing them to be disposed of along with household waste. The batteries are non-rechargeable and come in a convenient storage box for additional protection. The sleek design features vibrant rainbow colours that are pleasing to the eye.